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2. List of commercially available roofing materials - Wikipedia

   en.wikipedia.org/wiki/List_of_commercially...

   The outer layer of a roof shows great variation dependent upon availability of material, and the nature of the supporting structure. Those types of roofing material which are commercially available range from natural products such as thatch and slate to commercially produced products such as tiles and polycarbonate sheeting. Roofing materials ...

3. Transparency (projection) - Wikipedia

   en.wikipedia.org/wiki/Transparency_(projection)

   Transparencies can be printed using a variety of technologies. In the 1960s and 70s the GAF OZALID "projecto-viewfoil" used a diazo process to make a clear sheet framed in cardboard and protected by a rice paper cover. [1] In the 1980's laser printers or copiers could make foil sheets using standard xerographic processes. Specialist ...

4. Cost estimate - Wikipedia

   en.wikipedia.org/wiki/Cost_estimate

   A cost estimate is the approximation of the cost of a program, project, or operation. The cost estimate is the product of the cost estimating process. The cost estimate has a single total value and may have identifiable component values. A problem with a cost overrun can be avoided with a credible, reliable, and accurate cost estimate. A cost ...

5. Glossary of construction cost estimating - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_construction...

   A Allocation of costs is the transfer of costs from one cost item to one or more other cost items. Allowance - a value in an estimate to cover the cost of known but not yet fully defined work. As-sold estimate - the estimate which matches the agreed items and price for the project scope. B Basis of estimate (BOE) - a document which describes the scope basis, pricing basis, methods ...

6. Construction Specifications Institute - Wikipedia

   en.wikipedia.org/wiki/Construction...

   CSI publishes MasterFormat, which is a standardized classification for construction information, such as detailed construction project cost estimates or construction specifications. Since its debut under another title in 1963, MasterFormat consisted of 16 Divisions representing broad categories of construction, such as Masonry , Concrete ...

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